I don't charge VAT at all, can I turn this off?
If you don't charge VAT, you can turn VAT off by selecting from the menu.
In the 'Configure Your VAT Settings' section select No under the first setting :

Then select save changes.
If you don't charge VAT, you can turn VAT off by selecting Settings > VAT Settings from the menu.
In the 'Configure Your VAT Settings' section select No under the first setting Are you VAT registered?:

Then select save changes.